package lib.排列组合;

/*
 * Copyright 2012 wuyou (raistlic@gmail.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.math.BigInteger;

/**
 * The strategy interface for implementing the permutation algorithm.
 *
 * @date 07/08/2012
 */
public interface PermutationAlgorithm {

    public int getMaxSupportedSize();

    public BigInteger getPermutationCount(int numberOfElements);

    public void fetchPermutation(Object[] elements, BigInteger ordinal);
}
